Sole skiving machine



May Z, 1944. K w. MACDONALD SOLE SKIVING MACHINE F1ed`0ct. 27, 1941 3 Sheets-Sheet 1 May 2, 1944.

` K. w. MAcDoNALD soLE SKIVING MACHINE Filed oct. 27, 1941 5 Sheets-Sheet 2 Patented May 2, 1944 UNITED. STATES e PATENT; oFF1cE `2,348,142V Y l Y? f SOLE SKIVING MACHINE A y I Kenneth Macdonald, Watertown, Mass.,v assignor to Compo Shoe Machinery Corporation,v

Boston, Mass., a corporation of Delaware v Application October 27, 1941, Serial No. 416,631".y

(el. :L2- 17jV i,

24 claims.

This invention relates to skiving or splitting machines and more particularly to a skiving machine for reducing and shanking out shoe soles.

In the manufacture of shoes, it is usual prac- V'tice to prepare outsoles for attachment to the lasted shoe .bottoms by a series of operations such as skiving or fleshing to desired thickness, forepart reducing, and shanking out. These operations require the use of separate machines, and location of the shanking out, degree of bevel obtained, and general finish depend entirely upon the skill of the operators. To avoid some of these objections, shanking out machines have been devised but they do not complete the skiving operation, and require considerable attention and changing of dies and matrices.

Aygeneral object of this invention is to provide a skiving machine which is capable of skiving outsoles to desiredthickness,l reducing the foreparts and shanking out in a single operation.

More specifically, objects of the invention are to providea sole skiving machine with suitable matrices forreducing the foreparts and shanking out outsoles that are readily adjustable to accommodate varying sizes and widths.

Another object of the invention is to provide a mechanism for adjusting Vand indexing the psitions of the matrices that is simple and positive in operation and readily accessible.

A further object of the invention is to provide a skiving machine having an upper roll equipped with adjustable matrices and a cooperating pressure and feed roll which is deformable and which Will adapt itself to press an outsole into the matrices regardless of 'their size or positions.

A still further object of the invention is to provide novel means for driving the deformable pressure and feed roll in timed relation with the upper or matrix roll and yet allow the timed relation to be varied upon completion of a skiving operation in order to present another portion of the deformable pressure roll in alinement with the matrices to prevent undue Wear. Y

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combination' of elements, and arrangement of parts, which will be exemplied in the construction hereinafter set forth and the scope of the invention will be indicated in the claims.

lFor a fuller understanding ofv the nature and .objectsof the invention, reference should be had to the yfollowing detailed 'description taken in connection Awith the accompanying drawings, in

which: v Y

Fig. 1 isa vertical sectional view of ia sole skiving machine embodying preferred featuresk of the present invention, taken substantially along line VI-IofFig.2; 'l f f` Fig. 2 is a fragmentary plan view Vof the machine,'parts 'beingbroken' away better to illustrate the construction; f

Fig. 3 is a vetrical sectional vieW taken substantially along line 3,-3 of Fig. 1;

Fig. 4 is a's'ectonal view Vtaken substantially along line 4 4 of Fig. 3;

kFigQ is a fragmentary sectional view taken substantially along line 5-.5 of Fig. 4;

Fig. 6- is a sectional view taken substantially along line 6-6 of Fig.A 3 to show detail of the deformable pressure roll driving clutch;

Fig. 7 is a fragmentary vertical sectional View taken substantially along line 1-1 of Fig. 8;

Fig. 8 is a partial vertical sectional view similar to Fig. 3 but'showingvvork being depressed into the matrices;

Fig. 9 is a developed `plan vievv of the component parts of the matrix rolll as projected from Fig. '7 looking in the direction'of the arrows 9--9;7.`

Fig. l0 is a ysectional rviev'v taken along line .2

lll-l0 of Fig. 9 y .y

Fig. 11 is a sectional view takeny substantially along line l Iv--I I -of Fig. 9; and' Fig. 12 is a plan view of an outsole as reduced and shanked-out by the machine shownin Figs. 1 to ll, together with the'skiving removed therefrom duringY the operation.

l A preferred form of skiving machine to which this invention may be applied comprising,'.op posed rolls having suilcient circumferential length to-feed the entire length of an outsole lpast the skiving knife and having suitable sole locating, clamping, and presenting means, is gen- Y erally shown in CardiPatent No. 2,088,051,7and adapting the novel features-hereinafter described to this machine', allows it tobe utilizedtogreat advantage in preparing outsoles forattachment to lasted shoe bottoms in al uniform, rapidjand economical mlrlIlQ-if, l The jpresent inventionrelates to improvements in and `to thematriX-roll, matriesandfeed or pressure roll, and lhence vthe following description will be Y confined mainly thereto; Referring to the drawings, there is rshown a machine substantially the same as described in the above-'mentioned ,vCard patent, andlthemachine may comprise base members I4 atiopposite sides of which are securedupright standards l5 and I6 joined at their upper ends by a tie bar I1.

A skiving knife I8 is adjustably secured to the table portion of the base |4 with its knife edge located near the center of the matrix roll I9 and the feed and pressure roll 20.

The matrix roll |9 is supported byV a shaft 2| journalled in bearings 22 and 23 which are vertically adjustable in the standards I and I6. Integral and adjustable with the bearing 23 is a gear housing 24 to which is secured a stud 25 having a gear 26 freely rotatable thereon, and

meshing therewith is a gear 21 of equal diam-VV faculties clutch Snot snewjn) by means `tredi- Y 'pli'n'gs 'of 'the Oldham type, thus vallowing the clutch to rotate theshaft 26, the gears 26 and 21,'and the matrix roll Shaft 2|', even if the lower shaft 28 is not in axial alinf'em'ent with the clutch orwithgear 26.

The 'diameters of the rolls Y'Ij9 and 20 are equal, and thediametfers o'f 'tlegears 26 and 21 are equal, and a's means hereinafter describedare provided for securingthe rolls to the shafts, it is readily understood that one revolution of the feed roll shaft 26 d'rive both the feed roll 'a'nd matrixA roll Aone revolution in timed relation and in opposite vdirections so as to feed outsoles presentedto therqll'sjby :devices described in 'the aforementioned l'Card'patentpast the skiving knife.1 s fordert() 'sk Q jol'es of varying sizes and widths; 'adjustable matrix segments for operating upon the shank portion of the outsoles are Alorovided;fone lpair 35 for 'opposite sides -of the jl'eft ou ole, and one pair for opposite *sides joffajiight pu s ole, th e rf orer'g'trt 'portions of the L"utsoles being treated by separate matrices 31 and 38cut directlyinto a Yportion-of the roll, 'as best Vsho'vvn'in Fig. j`9 whichiis fa developed plan view of the compfeternatrix 'roll and its coin- 'lgiftpl'tg f Y,

Rfeferrin'g more lp"afrti'oilarly to Figs. 1 toll, which show a preferredfform of matrix roll construction, keyed to theshaft 21|fare Ahubs l46 and A The segment 42 'has matrices in the form oi depressions 331 and@ cut 'therein and which conform-somewhat to 'the -forepart `portions of outsoles. ltfhesyb'een foundthat a composite shape can be determined from several distinct voutsolepatterns and, if 'the matrix -is left Vlarge e'rlogh to -g-ivea minimum lreduced edge around Ythefor'e'zpart of thesrnallest f'size sole which may b/einthe order'o'f size Vv4B,'the largest soles will bevelled to suit a complete run of outsoles, and each has a projecting key 41 on the underside thereof and may be integral with the matrix segments. The roll segment 43 which carries the matrix segments is provided with a series of spaced grooves 48 in which the keys of the matrix segments are adapted to slide. Slots 45 are cut entirely through the roll segment 43, and the screws 46 which-are counterbored into the matrix segments pass through the slots and are screwthreaded -into a form of adjusting segment 50, the screwsv being provided with appropriate shoulders which abut the adjusting segment 5|] and also have sufficient body length to prevent clamping ofthe matrix and roll segments to the adjusting segment 50.

f The internal and external diameters of the adjusting segment 5|] are proportioned to allow it to be snugly confined between the internal diameter of the roll segments and the shaft 2|, and rotation ofthe adjusting segment upon the Vshaft 2| also cause Yrot-ation of the inatrix segments 35 and 36 with respect to the roll segments: f 1

In o1" er to allow the leading edge of the shank matrices dto overlap 'and be 'adjustable with respect to the 'forep'art matrices, 'the 'keys 41 'terminatesomewhat behind the 'leading edge as best shownat 5|, li'ig. Y11`.`

Provision of the adjustment between the shank and forepart matrices allows the start of the shrinking-out operation to be varied vso as properly to locate saine at the ball line of the outsole, andoneforrn ofa simple but effective mechanism for rapidly making and indexing the adjustment is shown Figs 3, 4,5, '7, and 8. The shaft 2| `isA provided with a bore 55 in which is arranged to slide a rod -56 having gear teeth 51 cut in the protruding end to form a rack. Turned integral with shaft 2| is acollar '58 h avinga bore 59 therein to receivea pinion 60. The

cppositejsides of the bore 59 are counterbored thekeyway At theend of the rod56 opposite the adjusting ypinioILahole is bored 'at rightangles in the centeriof the rod and a cam 4pin 68 is securely pressed therein. The ycam pin 68 .passes through atstraight slot 69 in the` wall of the shaft 2|, theghead of the ycjam 'pin engaging ln Vahelical slotl cut in 'the l.adjustingsegment 56.

Holes 1| in the head of the piniongear 66 are provided for 'insertion vof aform of wrench to 'turn the pinion, and rotation of the pinion 60 causesthe rod 56, to slide in the bore of the .shaft 2 I, and thecam pin-68 l-beingfin the helical slot 10 imparts a rotarymotion to the adjusting segment 50'and-the'shank matrices 35 and 36.

To'provide visualjindication of th'e-positionlof the sh'an'kfmatrices, the head of 'pinion gear 6U visinde'xedaccording to sole sizes 'as shown in Inforder toavoid accidentalidisplacement of the shank matrix segments by vibration, etc., a detent 15 is secured to a leaf spring 1-6 held to the 'shaft collar L58 by 'a screw, and the 'spring 'biases the detent 15 into `firm engagement with ythe 'teeth 0f the -pinon 5611, thus 'making it 'necscale as measured by a Shore durometer.

essary to use considerable force to eect rotation of the pinion or movement of the rod '6.

As the size and/o1` shape of the complete matrices alter according to the adjustment made to process any particular sizes of outsoles, it is not matrices. This deformable feed and pressure roll comprises an inner cylindrical roll 8B having molded thereon or otherwise secured thereto an outer cylinder of rubber-like compound 20 having a hardness within the limits of 70 to 8O A inner roll 8i! is provided with bearing bushings 8i and the complete roll is freely rotatable on the shaft 28, but isvlimited from endwis'e movement by being conned between the hubs 82 'and 83.

If the roll is left free on shaft 28, no feeding effort would be imparted to an outsole presented for passage through the rolls, and if the roll 20 is xedly secured to the shaft 28, the same portion of the rubber would always be presented to the matrices on the upper roll as both rolls are driven in timed relation and the constant `distortion cf the rubber in the same place would result in rapid deterioration.

To avoid these objections, an effective clutch arrangement is provided which allows both rolls to be driven in timed relation and yet which allows the timed relation of the rolls to be varied after each revolution so as always to present a different portion of the rubber roll to be deformed into the matrices at the next operation. n

One form of suitable clutch arrangement is shown in Figs. 3 and 6 and comprises an inner clutch member `85 which is keyed to the shaft; 28, an outer clutch member 86 turned integral with the inner roll cylinder Sii, and a series of rollers 8'? wedged between the inner and outer clutch members as the shaft 28 is rotated in the direction to feed a sole between the feed and matrix rolls.

This arrangement allows the complete feed roll to be freely rotatable on the shaft 28 in the direction of the feed, and as long as the shaft 23 is turning to feed a sole, the roll 2li and the roll i9 are driven in timed relation, but upon sudden stoppage of the rolls by the single revolution drive clutch (not shown) the bottom roll continues to turn as it overrides the clutch due to inertia, finally stopping by friction, and thus the timed relation of the rolls is altered and a Y different portion of the rubber roll 2B will cooperate with the matrices when the next outsoles are presented to the machine.

In operating the machine, the handle 34 is moved to open the sole presenting means and a pair of outsoles B are placed grain side up on the table 32, Fig. 2, and thetoe gages 33 are adjusted according to the size of the soles to lol cate their foreparts properly with respect toVV the fixed matrices 37 and 38 which control the forepart reducing operation. I Y

Upon release of the handle 34, the sole 4is alined and then gripped by the presenting means, all as described in the Card patent. The pinion gear 6B is then indexed to the correct sole size which rotates the shank matrices 35 and 36 upon the roll i9 and locates the shank*v matrices with respect to the forepart matrices to ensure a 4correct start for the shanking out.v 75 justably secured to said matrix roll, a cooperat- The single revolution drive clutchis then allowed to become operative soas to rotate the matrix, feed, `and sole presenting rolls, .and as the soles are fed between the matrix and feed rolls, they are distorted and are depressed into the matrices by the deformable feed roll 20 and are skived by the knife I8.

An outsole 9S as processed by the above described operation is shown in Fig. 12 together with the skiving 9i removed therefrom. It should be understood that the degree of bevel obtained at the forepart and/or shank portions canbe varied simply by interchanging the matrices,

which are readily removable from the machine.

Ordinarily o-utsoles are graded for thickness prior to the forepart reducing and shanking out operations, but unless they are skived considerable variation is present. The above described machine, in addition to the forepart reducing and shanking out operations, skives`the sole to an even thickness, as once the upper or matrix roll is spaced from the knife to process soles of a given thickness, any excess stock will be removed as part of the skiving 9i.

It will be seen that there has been provided a skiving machine that is well suited to perform in a single operation the complete reducing and skiving required to prepare an outsole for attachment to a shoe bottom.

Since certain changes may be made in the above construction and different embodiments of the invention could be made withoutl departing from the scope thereofit is intended that all matter contained in the above description Vor shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. Y

It is also to be understood that the following claims are intended to coverall of the generic and specific features of the invention herein described, and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll having xed matrix depressions in the periphery thereof and adjustable matricesthereon; a cooperating feed and pressure roll, and means for i rotating both of said rolls to feed an outsole past said skiving knife. Y

2. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll having xed matrices below its periphery and adjustable matrix segments above its periphery, a deformable feed and pressure roll, means for adjusting said matrix segments with respect to said matrix roll, and means for rotating both of said rolls.

3. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll comprising two segments, fixed and adjustable matrices secured to said matrix roll, a deformable feed and pressure roll, means for adjusting said adjustable matrices with respect to the fixed matrices, and means for rotating both of said rolls.

4. In a sole skiving machine the combination: a skiving knife, a matrix roll,`

matrices for treating the forepart portions of outsoles depressed in said matrix roll, matrices-I for treating the shank portions of outsoles ading feed and pressure roll, and means for rotating both of said rolls. l

, 5. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll, matrix depressions formed in the periphery of said matrix roll for treating the forepart portion of soles, matrices adjustably mounted on said matrix roll for treating the shank portionsV of soles, means for adjusting said shank treating matrices toward and away from said forepart treating matrix depressions, and afeed and pressure roll cooperating With said matrix roll to feed soles past said skiving knife.

6. In a sole skiving machine having a skiving knife and opposed rolls for feeding a sole past the skiving knife, the combination comprising, a matrix roll, a matrix depression in said roll for treating the forepart portion of an outsole, an elevated matrix on said roll for treating the shank portion of an outsole, and means for varying the position of one of said matrices with respect to the other of said matrices.

7. I n a sole skiving machine having a skiving knife and opposed rolls for feeding an outsole past the skiving knife, the combination comprising, a matrix roll, a matrix depression in xed relation on said roll for treatingv one end of an outsole, a matrix for treating the other end of an outsole adjustably mounted on said roll and arranged to overlap said rst mentioned matrix.

8. In a sole skiving machine having a skiving knife and opposed rolls for feedinga sole past the knife, the combination comprising, a matrix roll,

a matrix depression on said roll for treating one end of an outsole, an elevated matrix on said roll for treating the other end of said outsole, and means for varying the relative position of said matrices with respect to each other.

9. In a sole skiving machine having a skiving knife and opposed rolls for feeding an outsole past the knife; the combination comprising, a matrix roll, a pair of matrices on said roll for treating opposite ends of an outsole, and means for varying the position of one of said matrices with respect to the other, and means to rotate said matrix roll and matrices as a unit.

10. In a sole skiving machine having a skiving knife and'opposed rolls for feeding a sole past the knife, the combination comprising, a matrix roll, a matrix depression on said roll for treating the forepart portion of a sole, a matrix for treating the shank portion of said sole rotatably mounted on said roll, and means rotatable with said roll for rotating said shank treating matrix with respect to the-roll and matrix depression.

11. In a sole skiving machine having a skiving knife and opposed rolls for feeding a sole past the knife, the combination comprising, a matrix roll, a matrix depression formed in said roll for treating the forepart portion of a sole, and a pair of matrix segmentsv for treating the opposite sides of the shank portion of said sole rotatable on said roll towards and` away from said forepart treating matrix.

`l2. In a sole skiving'machine the combination Comprising, a skiving knife, a rotatable matrix roll having'a matrix depression in its periphery for treating the forepart portion of an outsole and an elevated matrix for treating the shank portion of said outsole, one of said matrices being arranged to overlap and be adjustable toward and away from the other, a feed and pressure roll rotatable in timed relation with said matrix roll, means for positioning a sole to properlylocate its forepart with respect to its matrix, means for positioning said matrices with respect to each other to properly locate the shank matrix with respect to said positioned sole, means for presenting said `positioned sole to the matrix and feed rolls, and means for rotating both of said rolls to deform said outsole to the shape of the matrices and to feed it past the skiving knife.

13. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll having a matrix depression below its periphery and a matrix elevated above its periphery for operating upon the forepart and shank portions of an outsole, a feed and pressure roll, means for positioning and presenting a sole to said rolls in relation to the position of said matrix depressions, means for adjusting the elevated matrix in relation to the positioned sole, and means for rotating both of said rolls to feed the sole past said knife.

14. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll and a cooperating feed and pressure roll, means for rotating both of said rolls one complete revolution in timed relation, and means for varying the timed relation o-f said rolls after each has made approximately one complete revolution.

15. In a sole skiving machine the combination comprising, a skiving knife, a matrix roll and cooperating deformable feed and pressure roll, means for rotating both of said rolls one complete revolution in timed relation, and means for varying the timed relation of said rolls after each has made approximately one complete revolution.

16. In a sole skiving machine having a skiving knife, a matrix roll and a pressure roll each having a large enough circumference to feed a sole past the skiving knife in one revolution, the combination comprising, matrix segments rotatable on the matrix roll, means for rotating said vsegments, means for locking said segments in the desired position, and means on the pressure roll for forcing a soie into the matrices regardless of their position on said matrix roll 1'7. In a sole skiving machine, the combination comprising, a skiving knife, a rotatable shaft having a matrix roll secured thereto, a rotatable shaft having a pressure roll rotatably mounted thereon, a one-Way clutch connecting said pressure roll to its shaft, and means for rotating said shafts and rolls to feed a sole past said skiving knife.

18. In a sole skiving machine, the combination comprising, a skiving knife, a pair of rotatable shafts, a matrix roll secured to one of said shafts, a deformable pressure and feed roll freely rotatable in one direction on the other shaft, and means for rotating both of said shafts and rolls.

19. In a sole skiving machine, the combination comprising, a skiving knife, a matrix roll, a deformable pressure and feed roll, driving means s for rotating both of said rolls, means for disconnecting said driving means after said rolls have made one complete revolution in timed relation, and means whereby said deformable pressure and feed roll can continue to rotate after said driving means is disconnectedY and the matrix roll has stopped rotating.

20. In a sole skiving machine, the combination comprising, a skiving knife, a matrix roll, a deformable pressure and feed roll, driving means for rotating said rolls in timed relation to feed a sole past said skiving knife, means for disconnecting said driving means after each roll has made one revolution and means for automatically completion of the sole skiving operation.

21. In a soie skiving machine the combination comprising, a skiving knife, a pair of rotatable shafts, a matrix roll secured to one shaft of said pair, a deformable feed and pressure roll freely rotatable on the other shaft in the direction of the feed, and means for rotating said shafts and said rolls one complete revolution in timed relation.

22. In a sole skiving machine the combination comprising, a rotatable shaft having a matrix roll secured thereto, matrices rotatably mounted on said matrix roll, a member having a cam slot secured to said matrices, a rod slidable in a bore in said shaft, and means on said rod engaging said cam slot whereby reciprocation of said rod will cause rotation of said matrices upon said matrix roll.

23. In a sole skiving machine the combination comprising, a skiving knife, a pair of rotatable shafts, a matrix roll secured to one of said shafts; a feed and pressure roll mounted on the other of said shafts, matrices secured to and rotatable on said matrix roll, a rod slidable in a bore provided in said shaft having the matrix roll secured thereto, connections between said rod and said matrices for rotating said matrices, and means for rotating both of said shafts.

24. In a sole skiving machine the combination comprising, a skiVing knife, a rotatable matrix roll, a matrix depression in the periphery of said matrix roll for treating the forepart portion of an outsole, a matrix adjustable on said matrix roll for treating the shank portion of said outsole, a rotatable feed and pressure roll cooperating with said matrix roll to depress said outsole into said matrices, means for positioning said outsole with respect to said forepart treating matrix, means for positioning said adjustable matrix with respect to said sole positioning means, and means for rotating both of said rolls to feed said outsole past said skiving knife.

KENNETH W. MACDONALD. 

